#pragma once
#include<stdio.h>
#include<stdlib.h>
#include<assert.h>

typedef char BTDatatype;


typedef struct BinaryTreeNode {
	BTDatatype Data;
	struct BinaryTreeNode* left;
	struct BinaryTreeNode* right;
}BTNode;



BTNode* BuyBTNode(char x);

BTNode* BinaryTreeCreate();

//前序遍历
void preOrder(BTNode* root);